Real estate investing
Rental income, cap rate, cash flow, debt coverage and the cash return on a single property.
Co-Ownership Equity Split Calculator
How the proceeds of a jointly owned home divide between two owners who put in unequal amounts, under three methods people use, with principal paid worked out from the mortgage.
NOI Calculator
Work out net operating income from rent, vacancy and operating costs, before any mortgage.
Cap Rate Calculator
Turn net operating income and a price into a capitalisation rate, and back again.
Rental Cash Flow Calculator
What is left each month after operating costs and the mortgage payment.
DSCR Calculator
Whether the property income covers its annual debt service, and by how much.
Cash-on-Cash Return Calculator
The annual pre-tax cash return on the cash you actually put into a property.
Gross Rent Multiplier Calculator
Price as a multiple of gross annual rent, and the price a target multiple implies.
Break-Even Occupancy Calculator
The occupancy a property must hold to cover its operating costs and its mortgage.
Floor Area Ratio Calculator
A building’s floor area ratio from its gross floor area and lot size, or the floor area a given ratio allows on a lot, or the lot a floor area needs.
Prorated Rent Calculator
Rent for part of a month when you move in or out mid-month, by the days in that month, a yearly daily rate or a 30-day month.
Rent Reduction vs Vacancy Calculator
For a vacant unit: the rent a price cut gives up over the lease, what each empty day costs, and how many days sooner the cut has to fill the unit to pay for itself.
Security Deposit Proration Calculator
Prorate move-out charges by each item’s remaining useful life, total them against the deposit and see the refund or the balance.
Shared Utility Allocation Calculator
Split a master-metered utility bill across units by occupants, floor area, unit count or a weighted blend, after the owner’s common-area share.
Rental property arithmetic goes wrong at the definitions, not the sums. Net operating income deliberately excludes the mortgage, so it is not the bottom line of a tax return: a Schedule E total includes mortgage interest and depreciation, and feeding that into a cap rate understates the answer while every number entered was honest. Cap rate ignores financing entirely, which is why two buyers paying the same price can see the same cap rate and completely different cash returns. These calculators keep each definition visible, use only the rents, prices, expenses and loan terms you enter, and supply no market rents, prices, benchmark cap rates or growth assumptions. They compare nothing to a threshold unless you enter the threshold yourself.